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21-letter words containing a, d, o, e

  • differential-quotient — something that has been derived.
  • digital videocassette — a videocassette containing magnetic tape used for high-fidelity digital recording or playback of video. Abbreviation: DVC.
  • disassortative mating — the reproductive pairing of individuals that have traits more dissimilar than would likely be the case if mating were random (contrasted with assortative mating).
  • discretionary account — an account in which the stockbroker is allowed complete control over the purchase and sale of securities on the customer's behalf.
  • disk operating system — DOS.
  • dissociative disorder — a mental disorder, as multiple personality, characterized by sudden temporary alteration in consciousness, identity, or motor behavior.
  • distinctiveness ratio — the ratio of the relative frequency of some event in a given sample to that in the general population or another relevant sample
  • do/did you hear (me)? — If you say 'Do you hear?' or 'Did you hear me?' to someone, you are telling them in an angry or forceful way to pay attention to what you are saying.
  • double predestination — the doctrine that God has foreordained both those who will be saved and those who will be damned.
  • double spanish burton — a tackle having one standing block and two running blocks, giving a mechanical advantage of five, neglecting friction.
  • downhole safety valve — A downhole safety valve is a piece of safety equipment used inside a well, which isolates wellbore pressure and fluid if something bad happens.
  • draft once reuse many — (jargon)   (DORUM) Reusing parts of a document to produce parts of an entirely new document. The term normally refers to text documents but the practise is equally common in programming.
  • drop in someone's lap — give someone the responsibility of
  • drop the handkerchief — a children's game in which all the players but one stand in a circle facing inward, while that one player stealthily drops a handkerchief behind a player in the circle who must pursue and attempt to catch the one who dropped the handkerchief before the latter reaches the vacated place.
  • duccio di buoninsegna — c1255–1319? Italian painter.
  • dumfries and galloway — a region in S Scotland. 2460 sq. mi. (6371 sq. km).
  • dusky seaside sparrow — a species of sparrow, Ammospiza maritima, existing in two subspecies, one (Cape Sable seaside sparrow) having dark olive-drab plumage with a lighter breast and underbelly, and the other (dusky seaside sparrow) having bold black and white markings on the breast and underbelly: the dusky seaside sparrow is almost extinct.
  • dynamic drive overlay — (storage, software)   (DDO) Software to allow a system BIOS that does not support Logical Block Addressing to access drives larger than 528 MB. The alternatives are to update the system BIOS or install an EIDE controller card with a suitable on-board BIOS.
  • easier said than done — difficult to do
  • eccles-jordan circuit — flip-flop
  • educational sociology — the application of sociological principles and methods to the solution of problems in an educational system.
  • electromagnetic field — a field of force associated with a moving electric charge equivalent to an electric field and a magnetic field at right angles to each other and to the direction of propagation
  • endoplasmic reticulum — an extensive intracellular membrane system whose functions include synthesis and transport of lipids and, in regions where ribosomes are attached, of proteins
  • enhanced oil recovery — any of several techniques that make it possible to recover more oil than can be obtained by natural pressure, such as the injection of fluid or gases into an oilfield to force more oil to the surface
  • enharmonic modulation — a change of key achieved by regarding a note in one key as an equivalent note in another. Thus E flat in the key of A flat could be regarded as D sharp in the key of B major
  • environmental studies — a university course studying the environment and related issues
  • epidermolysis bullosa — type of genetic skin disorder
  • every dog has his day — one's luck will come
  • every nook and cranny — If you talk about every nook and cranny of a place or situation, you mean every part or every aspect of it.
  • extensible vax editor — (text, tool)   (EVE) A DEC product implemented using DEC's Text Processing Utility (TPU).
  • faculty board meeting — a meeting of the governing body of a faculty
  • false memory syndrome — a psychological condition in which a person believes that he or she remembers events that have not actually occurred.
  • false-memory syndrome — a psychological condition in which a person believes that he or she remembers events that have not actually occurred.
  • federal reserve board — a U.S. federal banking system that is under the control of a central board of governors (Federal Reserve Board) with a central bank (Federal Reserve Bank) in each of 12 districts and that has wide powers in controlling credit and the flow of money as well as in performing other functions, as regulating and supervising its member banks.
  • ferric sodium oxalate — an emerald-green, crystalline, extremely water-soluble salt, used in photography and blueprinting.
  • first-dollar coverage — insurance that provides payment for the full loss up to the insured amount with no deductibles.
  • flat-coated retriever — one of an English breed of large sporting dogs having a flat, dense, shiny black or liver-colored coat, small ears, and long jaws, used for retrieving game from both water and land.
  • food conversion ratio — a ratio expressing the weight of food required to produce a unit gain in the live weight of an animal
  • food standards agency — the full form of FDA
  • foot-in-mouth disease — the habit of making inappropriate, insensitive, or imprudent statements.
  • forward exchange rate — the exchange rate of a currency to be delivered at a later date
  • fragmentation grenade — a grenade with a heavy metal casing that shatters, on exploding, into fragments that travel at high speed and with great force.
  • frankfort on the oder — a city in NE Germany, on the Oder River.
  • fraudulent conversion — conversion committed with the intent to defraud
  • free alongside vessel — (of a shipment of goods) delivered to the dock without charge to the buyer, but excluding the cost of loading onto the vessel
  • french fried potatoes — a more formal name for chips
  • from dan to beersheba — from one end of Israel to the other: Judg. 20:1
  • functional dependency — (database)   Given a relation R (in a relational database), attribute Y of R is functionally dependent on attribute X of R and X of R functionally determines Y of R (in symbols R.X -> R.Y) if and only if each X in R has associated with it precisely one Y in R (at any one time). Attributes X and Y may be composite. This is very close to a function in the mathematical sense.
  • game of cat and mouse — In a fight or contest, if one person plays cat and mouse, or a game of cat and mouse, with the other, the first person tries to confuse or deceive the second in order to defeat them.
  • gamma hydroxybutyrate — a substance that occurs naturally in the brain, used medically as a sedative but also as a recreational drug and alleged aphrodisiac: known as 'liquid ecstasy' when mixed with alcohol
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